Illustrative photograph of a domestic drain camera survey being discussed with the homeowner.
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Get quotes from local drainage specialists ↗Why it happens
Cameras can show obstructions, displaced joints and cracks, but cannot always establish why ground has moved. Ask for a report identifying the pipe run, defect location and supporting images.
Older homes can have clayware pipes, later plastic repairs and altered connections in the same drainage run. A defect at one joint does not necessarily describe the rest of the system.
Useful evidence to collect
Ask for a report identifying the pipe run, defect location and supporting images. Where safe, take dated photographs and note which appliances still work normally. Never enter a chamber or work around foul water without appropriate training and protection.
What repair is proportionate?
Seek a survey with usable footage, location details and clear findings. A video alone does not always prove that excavation or lining is necessary. A sensible recommendation should match the defect found and explain why a smaller repair would not be enough.
Before you agree to major work
Get the proposed work and its limits in writing. For costly repairs, ask for photographs or survey evidence locating the defect and consider a second quotation. Where the affected run may be shared or adopted, check ownership before arranging privately funded work.